110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/* Routines for generating and parsing messages */
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/* (C) 2011 by Holger Hans Peter Freyther <zecke@selfish.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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#include "xua_types.h"
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/sigtran/mtp_sap.h>
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#define XUA_HDR(class, type) ((struct xua_common_hdr) { .spare = 0, .msg_class = (class), .msg_type = (type) })
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struct msgb;
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struct osmo_sccp_addr;
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struct osmo_sccp_gt;
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struct xua_msg {
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struct xua_common_hdr hdr;
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struct osmo_mtp_transfer_param mtp;
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struct llist_head headers;
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};
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struct xua_msg_part {
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struct llist_head entry;
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uint16_t tag;
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uint16_t len;
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uint8_t *dat;
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/* TODO: keep small data in the struct for perf reasons */
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};
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struct xua_msg_class {
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const char *name;
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const struct value_string *msgt_names;
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const struct value_string *iei_names;
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const uint16_t *mand_ies[256];
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};
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struct xua_dialect {
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const char *name;
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uint16_t port;
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uint16_t ppid;
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int log_subsys;
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const struct xua_msg_class *class[256];
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};
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struct xua_msg_event_map {
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uint8_t msg_class;
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uint8_t msg_type;
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int event;
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};
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extern const struct xua_dialect xua_dialect_sua;
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extern const struct xua_dialect xua_dialect_m3ua;
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void osmo_xua_msg_tall_ctx_init(void *ctx);
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struct xua_msg *xua_msg_alloc(void);
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void xua_msg_free(struct xua_msg *msg);
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int xua_msg_add_data(struct xua_msg *msg, uint16_t tag, uint16_t len, const uint8_t *dat);
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struct xua_msg_part *xua_msg_find_tag(const struct xua_msg *msg, uint16_t tag);
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int xua_msg_free_tag(struct xua_msg *xua, uint16_t tag);
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int xua_msg_copy_part(struct xua_msg *xua_out, uint16_t tag_out,
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const struct xua_msg *xua_in, uint16_t tag_in);
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struct xua_msg *xua_from_msg(const int version, uint16_t len, uint8_t *data);
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struct msgb *xua_to_msg(const int version, struct xua_msg *msg);
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struct xua_msg *xua_from_nested(struct xua_msg_part *outer);
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int msgb_t16l16vp_put(struct msgb *msg, uint16_t tag, uint16_t len, const uint8_t *data);
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int msgb_t16l16vp_put_u32(struct msgb *msg, uint16_t tag, uint32_t val);
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int xua_msg_add_u32(struct xua_msg *xua, uint16_t iei, uint32_t val);
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uint32_t xua_msg_part_get_u32(const struct xua_msg_part *part);
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uint32_t xua_msg_get_u32(const struct xua_msg *xua, uint16_t iei);
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const uint32_t *xua_msg_get_u32p(const struct xua_msg *xua, uint16_t iei, uint32_t *out);
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const char *xua_msg_part_get_str(const struct xua_msg_part *part);
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const char *xua_msg_get_str(const struct xua_msg *xua, uint16_t iei);
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int xua_msg_get_len(const struct xua_msg *xua, uint16_t iei);
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void xua_part_add_gt(struct msgb *msg, const struct osmo_sccp_gt *gt);
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int xua_msg_add_sccp_addr(struct xua_msg *xua, uint16_t iei, const struct osmo_sccp_addr *addr);
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const char *xua_class_msg_name(const struct xua_msg_class *xmc, uint16_t msg_type);
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const char *xua_class_iei_name(const struct xua_msg_class *xmc, uint16_t iei);
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char *xua_hdr_dump(struct xua_msg *xua, const struct xua_dialect *dialect);
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char *xua_msg_dump(struct xua_msg *xua, const struct xua_dialect *dialect);
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int xua_dialect_check_all_mand_ies(const struct xua_dialect *dialect, struct xua_msg *xua);
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int xua_msg_event_map(const struct xua_msg *xua,
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const struct xua_msg_event_map *maps,
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unsigned int num_maps);
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